Model-Independent Second-Order Determination of the Strong-Coupling Constant α s
1983; American Physical Society; Volume: 50; Issue: 26 Linguagem: Inglês
10.1103/physrevlett.50.2051
ISSN1092-0145
AutoresB. Adeva, D. P. Barber, U. Becker, J. Berdugo, G. Berghoff, A. Böhm, J. G. Branson, J.D. Burger, M. Capell, M. Cerrada, C. C. Chang, H. S. Chen, M. Chen, M. L. Chen, M. Y. Chen, Y. S. Chu, R. Clare, E. Deffur, M. Demarteau, P. Duinker, M. Feng, H. Fesefeldt, D.G. Fong, M. Fukushima, D. Harting, T. Hebbeker, G. Herten, M. C. Ho, M.M. Ilyas, D. Z. Jiang, W. Krenz, P.G. Kuijer, Q. Z. Li, D. Luckey, E. J. Luit, C. Mañá, M.A. Marquina, G.G.G. Massaro, R. Mount, H. B. Newman, M. Pohl, F. P. Poschmann, R. R. Rau, J.-P. Revol, S. Consuegra Rodŕıguez, M. Rohde, J.A. Rubio, H. Rykaczewski, J. Salicio, I. Schulz, K. Sinram, M. Steuer, G. M. Swider, Ping Tang, D. Teuchert, Samuel C.C. Ting, K.L. Tung, M. Q. Wang, M. J. White, Huifang Wu, S.X. Wu, B. Wysłouch, B. Zhou, R. Y. Zhu, Y. C. Zhu,
Tópico(s)Quantum Chromodynamics and Particle Interactions
ResumoWith use of the MARK-J detector at $\sqrt{s}=34.7$ GeV 21 000 ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}\mathrm{hadron}$ events have been collected. By measurement of the asymmetry in angular energy correlations the strong coupling constant ${\ensuremath{\alpha}}_{s}=0.13\ifmmode\pm\else\textpm\fi{}0.01 (\mathrm{statistical})\ifmmode\pm\else\textpm\fi{}0.02 (\mathrm{systematic})$ is determined, in complete second order, and independent of the fragmentation models and QCD cutoff values used.
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